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R. Bielak, G. Liedl:
"FEM analysis of debonding problems during bi-metal wire joining of aluminum and steel sheets";
in: "Internetový časopis MATERIALS SCIENCE AND TECHNOLOGY", issued by: Faculty of Materials Science and Technolgy; Materials Science and Technology, Trnava, 2011, ISSN: 1335-9053, 83 - 88.

Zinc-coated steel sheets have been joined with aluminum samples in an overlapping as well as in a butt-joint configuration. A bi-metal-wire composed from aluminum and steel was used as a filling metal in a series of welding experiment. An advantage of the laser-assisted
bi-metal-wire welding is that the welding process is simplified since the primary joint between aluminium and steel exists already and laser welding occurs only between similar materials. FEM-simulations of the process were chosen to determine the proper dimensions with respect to the formability and thus possible debonding of the bi-metal-wire.

Zinc-coated steel sheets have been joined with aluminum samples in an overlapping as well as in a butt-joint configuration. A bi-metal-wire composed from aluminum and steel was used as a filling metal in a series of welding experiment. An advantage of the laser-assisted
bi-metal-wire welding is that the welding process is simplified since the primary joint between aluminium and steel exists already and laser welding occurs only between similar materials. FEM-simulations of the process were chosen to determine the proper dimensions with respect to the formability and thus possible debonding of the bi-metal-wire.

http://publik.tuwien.ac.at/files/PubDat_197951.pdf

Project Head Gerhard Liedl:
Thermisches Fügen von Aluminum mit Stahl